Rohde and Schwarz ZV-Z52 Calibration Unit, 4-port, 10MHz–24GHz

The Rohde & Schwarz ZV-Z52 is an automatic calibration unit for multiport system error correction in RF and microwave network analysis. It electronically switches integrated calibration standards across four ports, enabling rapid, accurate measurements from 10 MHz to 24 GHz. The unit connects via USB to compatible Rohde & Schwarz analyzers

ZVA/T, ZNB/T, ZNC, ZND, ZNL, ZVA, ZVT, and ZVB series - with automatic detection upon connection.

No warm-up time is required; the unit operates immediately at ambient temperature.

Technical Specifications

• Frequency range: 10 MHz to 24 GHz


• Port configuration: 4 ports


• Connectors: 3.5 mm (f)


• Impedance: 50 Ω or 75 Ω


• Nominal input level: −45 dBm to +20 dBm


• Maximum input level: +23 dBm


• Damage threshold DC voltage: 12 V


• Control and power interface: USB Type B


• Warm-up time: Virtually none; ready at ambient temperature Calibration speed varies with measurement parameters. At 1 kHz bandwidth: 27 seconds for 201 points, 34 seconds for 401 points. At 100 Hz bandwidth: 67 seconds for 201 points.

Key Features

• Four-port configuration supports multiport calibration and reconnection-based measurement of ZNB and ZNB+switch matrix systems


• USB Type B connection supplies both power and control; cable length limited to 1 m maximum


• Automatic detection and installation via compatible analyzer


• Multiple calibration units can connect simultaneously to separate USB ports


• Maximum RF input power exceeds compatible analyzer output range, providing integrated overvoltage protection


• Unused ports must be terminated with 50 Ω matching to ensure calibration accuracy


• Adapters must not be inserted between calibration unit and analyzer test ports

Integration & Operational Requirements Connection is restricted to the network analyzer's USB port only; connection to external computers, USB hubs, or other hosts risks equipment damage. ESD protection is mandatory - use the supplied wrist strap and grounding cord connected to the front panel GND connector. The unIt has system-level error correction for accurate RF and microwave measurements without requiring external calibration kits.